Ranked by the OnlyBeaches Index (OBI) — a 1-10 score blending water purity, conditions, crowd levels and vibe. Updated every 30 minutes.
Big Buddha Beach
Well-known for the Big Buddha temple nearby, great for tourists.
Bophut Beach
Famous for the Fisherman’s Village and vibrant nightlife.
Chaweng Beach
Most popular beach, perfect for parties and sunbathing.
Choeng Mon Beach
Ideal for a relaxing day away from the crowds, with calm waters.
Coral Cove
Hidden gem, ideal for snorkeling and getting away from the crowds.
Laem Set Beach
A hidden pebble beach with peaceful surroundings.
Lamai Beach
Great for families with a mix of relaxation and activities.
Maenam Beach
Calm waters, perfect for a peaceful getaway and snorkeling.
Silver Beach
Secluded and beautiful beach perfect for a quiet day.
Tong Takian Beach
A quiet, scenic beach ideal for sunbathing and swimming.
Koh Samui sits in Surat Thani, Thailand and is home to 10 ranked beaches on OnlyBeaches. Every beach here is scored by the OnlyBeaches Index — a 1-10 metric blending water purity, live conditions (waves, water temperature, wind), crowd intelligence and vibe.
Whether you're after the highest-scoring beach in Koh Samui or a quieter hidden cove, the list above is refreshed every 30 minutes using live Stormglass and OpenWeather data.
